Patents by Inventor Koichi Takamura

Koichi Takamura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10240311
    Abstract: Methods for reducing the size of an oil slick on a water surface or on a water surface when ice is present are described. Spreading of oil can be reversed by reducing the surface tension of the seawater, for example, by using a low concentration of at least one water-soluble surfactant, such as a non-ionic surfactant. A controlled amount of the surfactant or surfactant mixture may be discharged over time at the inner-wall of a spill control boom surrounding the oil spill, or within the vicinity of the oil spill in the absence of control booms using a soaker hose or a floating polyethylene or polypropylene hose impregnated with surfactant, whereby the confinement and contraction of the oil slick is maintained by compensating for dissolved surfactant and surfactant moving away from the oil slick. Water-soluble surfactants are typically solids or gels at low temperatures when no organic co-solvent is added to the surfactant.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: March 26, 2019
    Assignee: University of Wyoming
    Inventors: Koichi Takamura, Norman R. Morrow, Nina Loahardjo, Winoto
  • Patent number: 9797109
    Abstract: A method for retracting oil on a water surface, and a method for reducing the quantity of oil on an oil control boom are described. Spreading of oil can be reversed by reducing the surface tension of the seawater, for example by using a low concentration of a water-soluble surfactant, such as a non-ionic surfactant. A controlled amount of the surfactant may be continuously discharged at the inner-wall of a spill control boom surrounding the oil spill. The spilled oil is caused to retract away from the boom toward the center of the area encircled thereby, such that the oil layer becomes sufficiently thick to be more effectively removed mechanically. The surfactant also reduces the amount of oil on the spill control boom, whereby the boom can easily be removed from a remediated oil spill and reused at a later date without further cleaning.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: October 24, 2017
    Assignee: University of Wyoming
    Inventors: Koichi Takamura, Norman R. Morrow, Nina Loahardjo, Winoto Winoto
  • Patent number: 9657112
    Abstract: Co-agglomerated dispersions and methods for their preparation are described herein. The co-agglomerated dispersions are prepared by co-agglomerating an anionic polymer dispersion and inert particles. The polymers for use in the co-agglomerated dispersions are derived from one or more monomers including at least one conjugated diene monomer. The inert particles have a particle size of less than 2 ?m. Also described herein is an aqueous dispersion including co-agglomerated particles formed from at least one polymer and at least one inert material. Further described herein are foamed polymers, latex-based adhesives, waterproofing membranes, sound absorbing coatings, and methods for their preparation and use.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: May 23, 2017
    Assignee: BASF SE
    Inventors: Koichi Takamura, Kostas S. Avramidis
  • Publication number: 20170066847
    Abstract: Co-agglomerated dispersions and methods for their preparation are described herein. The co-agglomerated dispersions are prepared by co-agglomerating an anionic polymer dispersion and inert particles. The polymers for use in the co-agglomerated dispersions are derived from one or more monomers including at least one conjugated diene monomer. The inert particles have a particle size of less than 2 ?m. Also described herein is an aqueous dispersion including co-agglomerated particles formed from at least one polymer and at least one inert material. Further described herein are foamed polymers, latex-based adhesives, waterproofing membranes, sound absorbing coatings, and methods for their preparation and use.
    Type: Application
    Filed: November 21, 2016
    Publication date: March 9, 2017
    Applicant: BASF SE
    Inventors: Koichi TAKAMURA, Kostas S. AVRAMIDIS
  • Patent number: 9290651
    Abstract: The invention is a method of producing an essentially electrically neutral polymer dispersion, comprising a polymerizing one or more monomers in the presence of a nonionic surfactant, wherein the polymerization preferably occurs in the absence of ionic surfactants. The invention also includes methods of producing positively or negatively charged polymer dispersions comprising producing the essentially nonionic polymer dispersion and further adding a cationically-charged or anionically-charged surfactant or electrolyte. The invention further includes dispersions produced by the methods of the invention and polymer films and powders produced from these dispersions.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: March 22, 2016
    Assignee: BASF SE
    Inventors: Koichi Takamura, Armin Burghart
  • Publication number: 20160017560
    Abstract: Methods for reducing the size of an oil slick on a water surface or on a water surface when ice is present are described. Spreading of oil can be reversed by reducing the surface tension of the seawater, for example, by using a low concentration of at least one water-soluble surfactant, such as a non-ionic surfactant. A controlled amount of the surfactant or surfactant mixture may be discharged over time at the inner-wall of a spill control boom surrounding the oil spill, or within the vicinity of the oil spill in the absence of control booms using a soaker hose or a floating polyethylene or polypropylene hose impregnated with surfactant, whereby the confinement and contraction of the oil slick is maintained by compensating for dissolved surfactant and surfactant moving away from the oil slick. Water-soluble surfactants are typically solids or gels at low temperatures when no organic co-solvent is added to the surfactant.
    Type: Application
    Filed: April 30, 2015
    Publication date: January 21, 2016
    Inventors: Koichi Takamura, Norman R. Morrow, Nina Loahardjo, Winoto
  • Patent number: 8735472
    Abstract: The invention is a method of treating, restoring or sealing a surface comprising applying an emulsion comprising a latex polymer, a cationic emulsifier, and optionally a recycling agent to the surface to wet the surface and depositing a surface treatment layer on the surface, wherein the depositing step occurs while the surface is wetted. The invention also includes a surface pretreatment composition comprising water, at least one acrylic latex polymer, an aromatic recycling agent, and at least one cationic emulsifier. Furthermore, the invention includes the surface resulting from the application of the emulsion used in the invention and concentrated emulsions for use with the surface treatment composition.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: May 27, 2014
    Assignee: BASF SE
    Inventors: Koichi Takamura, Armin Burghart, William Kirk
  • Publication number: 20130253133
    Abstract: The invention is a method of producing an essentially electrically neutral polymer dispersion, comprising a polymerizing one or more monomers in the presence of a nonionic surfactant, wherein the polymerization preferably occurs in the absence of ionic surfactants. The invention also includes methods of producing positively or negatively charged polymer dispersions comprising producing the essentially nonionic polymer dispersion and further adding a cationically-charged or anionically-charged surfactant or electrolyte. The invention further includes dispersions produced by the methods of the invention and polymer films and powders produced from these dispersions.
    Type: Application
    Filed: March 29, 2013
    Publication date: September 26, 2013
    Applicant: BASF SE
    Inventors: Koichi Takamura, Armin Burghart
  • Publication number: 20130168324
    Abstract: A method for retracting oil on a water surface, and a method for reducing the quantity of oil on an oil control boom are described. Spreading of oil can be reversed by reducing the surface tension of the seawater, for example by using a low concentration of a water-soluble surfactant, such as a non-ionic surfactant. A controlled amount of the surfactant may be continuously discharged at the inner-wall of a spill control boom surrounding the oil spill. The spilled oil is caused to retract away from the boom toward the center of the area encircled thereby, such that the oil layer becomes sufficiently thick to be more effectively removed mechanically. The surfactant also reduces the amount of oil on the spill control boom, whereby the boom can easily be removed from a remediated oil spill and reused at a later date without further cleaning.
    Type: Application
    Filed: October 17, 2012
    Publication date: July 4, 2013
    Inventors: Koichi Takamura, Noman R. Morrow, Nina Loahardjo, Winoto Winoto
  • Patent number: 8410211
    Abstract: The invention is a method of producing an essentially electrically neutral polymer dispersion, comprising a polymerizing one or more monomers in the presence of a nonionic surfactant, wherein the polymerization preferably occurs in the absence of ionic surfactants. The invention also includes methods of producing positively or negatively charged polymer dispersions comprising producing the essentially nonionic polymer dispersion and further adding a cationically-charged or anionically-charged surfactant or electrolyte. The invention further includes dispersions produced by the methods of the invention and polymer films and powders produced from these dispersions.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: April 2, 2013
    Assignee: BASF SE
    Inventors: Koichi Takamura, Armin Burghart
  • Patent number: 8383722
    Abstract: The invention is a method of producing an essentially electrically neutral polymer dispersion, comprising a polymerizing one or more monomers in the presence of a nonionic surfactant, wherein the polymerization preferably occurs in the absence of ionic surfactants. The invention also includes methods of producing positively or negatively charged polymer dispersions comprising producing the essentially nonionic polymer dispersion and further adding a cationically-charged or anionically-charged surfactant or electrolyte. The invention further includes dispersions produced by the methods of the invention and polymer films and powders produced from these dispersions.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: February 26, 2013
    Assignee: BASF SE
    Inventors: Koichi Takamura, Armin Burghart
  • Publication number: 20120322922
    Abstract: The invention is a method of treating, restoring or sealing a surface comprising applying an emulsion comprising a latex polymer, a cationic emulsifier, and optionally a recycling agent to the surface to wet the surface and depositing a surface treatment layer on the surface, wherein the depositing step occurs while the surface is wetted. The invention also includes a surface pretreatment composition comprising water, at least one acrylic latex polymer, an aromatic recycling agent, and at least one cationic emulsifier. Furthermore, the invention includes the surface resulting from the application of the emulsion used in the invention and concentrated emulsions for use with the surface treatment composition.
    Type: Application
    Filed: August 24, 2012
    Publication date: December 20, 2012
    Applicant: BASF SE
    Inventors: Koichi Takamura, Armin Burghart, William Kirk
  • Publication number: 20120277374
    Abstract: The invention is a method of producing an essentially electrically neutral polymer dispersion, comprising a polymerizing one or more monomers in the presence of a nonionic surfactant, wherein the polymerization preferably occurs in the absence of ionic surfactants. The invention also includes methods of producing positively or negatively charged polymer dispersions comprising producing the essentially nonionic polymer dispersion and further adding a cationically-charged or anionically-charged surfactant or electrolyte. The invention further includes dispersions produced by the methods of the invention and polymer films and powders produced from these dispersions.
    Type: Application
    Filed: July 10, 2012
    Publication date: November 1, 2012
    Applicant: BASF SE
    Inventors: Koichi Takamura, Amin Burghart
  • Patent number: 8287945
    Abstract: The invention is a method of treating, restoring or sealing a surface comprising applying an emulsion comprising a latex polymer, a cationic emulsifier, and optionally a recycling agent to the surface to wet the surface and depositing a surface treatment layer on the surface, wherein the depositing step occurs while the surface is wetted. The invention also includes a surface pretreatment composition comprising water, at least one acrylic latex polymer, an aromatic recycling agent, and at least one cationic emulsifier. Furthermore, the invention includes the surface resulting from the application of the emulsion used in the invention and concentrated emulsions for use with the surface treatment composition.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: October 16, 2012
    Assignee: BASF SE
    Inventors: Koichi Takamura, Armin Burghart, William Kirk
  • Patent number: 8217111
    Abstract: The invention is a method of producing an essentially electrically neutral polymer dispersion, comprising a polymerizing one or more monomers in the presence of a nonionic surfactant, wherein the polymerization preferably occurs in the absence of ionic surfactants. The invention also includes methods of producing positively or negatively charged polymer dispersions comprising producing the essentially nonionic polymer dispersion and further adding a cationically-charged or anionically-charged surfactant or electrolyte. The invention further includes dispersions produced by the methods of the invention and polymer films and powders produced from these dispersions.
    Type: Grant
    Filed: April 4, 2007
    Date of Patent: July 10, 2012
    Assignee: BASF SE
    Inventors: Koichi Takamura, Armin Burghart
  • Publication number: 20120090781
    Abstract: Co-agglomerated dispersions and methods for their preparation are described herein. The co-agglomerated dispersions are prepared by co-agglomerating an anionic polymer dispersion and inert particles. The polymers for use in the co-agglomerated dispersions are derived from one or more monomers including at least one conjugated diene monomer. The inert particles have a particle size of less than 2 ?m. Also described herein is an aqueous dispersion including co-agglomerated particles formed from at least one polymer and at least one inert material. Further described herein are foamed polymers, latex-based adhesives, waterproofing membranes, sound absorbing coatings, and methods for their preparation and use.
    Type: Application
    Filed: July 1, 2010
    Publication date: April 19, 2012
    Applicant: BASF SE
    Inventor: Koichi Takamura
  • Publication number: 20120077909
    Abstract: The invention is a method of producing an essentially electrically neutral polymer dispersion, comprising a polymerizing one or more monomers in the presence of a nonionic surfactant, wherein the polymerization preferably occurs in the absence of ionic surfactants. The invention also includes methods of producing positively or negatively charged polymer dispersions comprising producing the essentially nonionic polymer dispersion and further adding a cationically-charged or anionically-charged surfactant or electrolyte. The invention further includes dispersions produced by the methods of the invention and polymer films and powders produced from these dispersions.
    Type: Application
    Filed: December 9, 2011
    Publication date: March 29, 2012
    Applicant: BASF SE
    Inventors: Koichi Takamura, Armin Burghart
  • Publication number: 20100047015
    Abstract: The invention is a cost-effective method and formulation for cold paving applications that can be used to convert an unpaved surface, such as a gravel or dirt roadway, into a paved surface. The method includes applying an asphalt emulsion comprising asphalt, water, one or more emulsifiers, and a polymer to an existing unpaved surface to provide a layer of asphalt emulsion. An aggregate is then deposited over the emulsion layer to form a paved surface. The asphalt emulsion is formulated so that it can be used in a wide variety of conditions and with locally available aggregate. The set rate and viscosity of the asphalt emulsion can be selected so that it is able to penetrate partially into the unpaved surface to further improve the stability and rain resistance of the roadway.
    Type: Application
    Filed: August 21, 2008
    Publication date: February 25, 2010
    Applicant: BASF SE
    Inventors: Koichi Takamura, Armin Burghart, William Kirk
  • Publication number: 20090298998
    Abstract: The invention is a method of producing an essentially electrically neutral polymer dispersion, comprising a polymerizing one or more monomers in the presence of a nonionic surfactant, wherein the polymerization preferably occurs in the absence of ionic surfactants. The invention also includes methods of producing positively or negatively charged polymer dispersions comprising producing the essentially nonionic polymer dispersion and further adding a cationically-charged or anionically-charged surfactant or electrolyte. The invention further includes dispersions produced by the methods of the invention and polymer films and powders produced from these dispersions.
    Type: Application
    Filed: April 4, 2007
    Publication date: December 3, 2009
    Applicant: BASF SE
    Inventors: Koichi Takamura, Armin Burghart
  • Publication number: 20090252972
    Abstract: The invention is a product, comprising a substrate and a film that limits the transmission of water vapor comprising a polymer derived from one or more nonionic monomers polymerized in the presence of at least one nonionic surfactant and in the absence of ionic surfactants. The cloud temperature of the at least one nonionic surfactant is preferably less than the polymerization temperature. The nonionic surfactant is preferably an alkylene oxide adduct of an alkyl alcohol, alkylbenzene alcohol or dialkylbenzene alcohol, wherein the number of alkylene oxide groups is less than or equal to 14.
    Type: Application
    Filed: April 4, 2007
    Publication date: October 8, 2009
    Applicant: BASF SE
    Inventors: Armin Burghart, Koichi Takamura